How to Prepare for ILR When Your Qualifying Period Straddles the April 2024 Rule Change

If your ILR qualifying period straddles April 11, 2024, you are subject to two different absence calculation regimes — and no free tool handles both correctly. The pre-April 2024 portion of your qualifying period follows the old limits (no single absence exceeding 184 days, no more than 548 days total), while the post-April 2024 portion follows the new rolling 180-day-in-any-12-month-window rule. Getting either calculation wrong is a refusal. Getting both right requires a methodology that most applicants — and many solicitors — have never seen in one place.

This is the most complex continuous residence calculation currently required in UK immigration law. It primarily affects two groups: Long Residence (10-year route) applicants whose decade of residence straddles the transition date, and Skilled Workers who entered the UK before 2020 and are now applying after accumulating exactly 5 years.

Why April 11, 2024 Changed Everything

Before April 11, 2024, the continuous residence rules were comparatively simple. You could not be absent for more than 184 days in any single trip, and your total absences could not exceed 548 days across the entire qualifying period. These rules applied to fixed blocks — calendar years or the full qualifying window — and were relatively easy to calculate.

After April 11, 2024, Appendix Continuous Residence introduced the rolling 12-month window methodology. A caseworker can pick any date in your qualifying period and look backward 12 months. If the total absences in that window exceed 180 days, your continuous residence is broken. There is no total-absence cap for the post-April portion — but the rolling window test is far more stringent because it checks every possible 12-month period, not just calendar years.

The Hybrid Calculation

If your qualifying period straddles April 11, 2024, you must split your travel history into two segments and apply the correct rules to each:

The 548-day total cap is eliminated for the post-April portion. But the rolling window test more than compensates, because it catches patterns that the old total-cap method missed. Three separate 2-week trips within the same 12-month window add up differently when measured against overlapping windows versus fixed blocks.

Worked Example: 10-Year Route

A Long Residence applicant qualifying in January 2028 has a 10-year period from January 2018 to January 2028. The pre-April 2024 segment covers January 2018 to April 10, 2024 (roughly 6.3 years). During this time:

• Longest single absence: 120 days (under the 184-day limit — passes)
• Total days abroad: 510 days (under the 548-day limit — passes)

The post-April 2024 segment covers April 11, 2024 to January 2028 (roughly 3.7 years). During this time, the caseworker checks every rolling 12-month window. The applicant took a 90-day trip in summer 2025, a 50-day trip in December 2025, and a 45-day trip in spring 2026. The window from May 2025 to April 2026 contains 185 days abroad — 5 days over the 180-day limit. The application fails despite passing every individual trip test.

Worked Example: Skilled Worker

A Skilled Worker sponsored in November 2019 hits 5 years in November 2024. The pre-April 2024 segment covers November 2019 to April 10, 2024 (4.4 years). The post-April 2024 segment covers April 11 to November 2024 (7 months). Even for this short post-transition window, the rolling methodology applies. If the applicant took a long trip bridging the transition (departing in March 2024, returning in May 2024), the absence days after April 11 count under the new rules and the days before count under the old rules.

The Dangerous Overlap Zone

Trips that bridge April 11, 2024 are the trickiest to handle. If you left the UK on March 1, 2024, and returned on June 15, 2024:

• Days abroad before April 11: 41 days (count toward the 548-day total and the 184-day single trip limit)
• Days abroad after April 11: 65 days (count toward rolling 12-month windows under the new rules)
• The total trip length (106 days) still matters for the pre-April single-trip limit

Most free calculators treat the entire trip as one block under one regime. The Home Office does not. It splits at the transition date and applies each regime's rules to its portion.

Who This Affects Most

• 10-Year Long Residence applicants — the most complex group. A full decade of travel history split across two regimes, with the old 548-day total cap applying to more than half the period and the new rolling windows applying to the rest.
• Skilled Workers who entered before 2020 — their 5-year qualifying period includes a significant pre-April 2024 segment. The transitional salary threshold (£31,300 for those sponsored before April 4, 2024) adds another layer of complexity.
• Family route applicants on their second extension — if you entered on a spouse visa in 2019, your 5-year path to ILR includes substantial time under both regimes.
• Anyone who travelled heavily during COVID and post-COVID recovery — the 2020-2024 period included lockdown restrictions, family emergencies abroad, and catch-up travel that can cluster absences in overlapping windows.

Who This Is For

• Applicants whose qualifying period started before April 2024 and ends after it
• Long Residence route applicants approaching 10 years who need the hybrid calculation methodology
• Anyone who has taken multiple trips abroad and needs to verify compliance under both absence regimes
• Skilled Workers on transitional arrangements who want to understand how the old and new salary rules interact with the old and new absence rules

Who This Is NOT For

• Applicants whose entire qualifying period falls after April 11, 2024 — you only need the rolling 180-day methodology
• Applicants whose entire qualifying period falls before April 11, 2024 — you only need the 184-day/548-day rules (though very few applicants qualify under this scenario in 2026)

Why No Free Tool Handles This

GOV.UK explains the new rolling rules but does not provide worked examples for the transition. Reddit posts from 2023 describe the old rules as current. Immigration solicitor blogs explain both regimes in separate articles but rarely address the hybrid calculation for applicants straddling both. Free absence calculators use one methodology — either the old or the new — and cannot split a travel history across two regimes.

The UK Indefinite Leave to Remain (ILR) Guide includes the hybrid calculator methodology specifically for applicants whose qualifying period straddles April 2024. It walks through the split calculation, provides worked examples for both Skilled Worker and Long Residence scenarios, and shows how departure and arrival days are treated differently under each regime.

Frequently Asked Questions

Does the April 2024 change affect my salary threshold too?

Yes, but separately. If your Certificate of Sponsorship was assigned before April 4, 2024, you benefit from the transitional salary threshold of £31,300 (not the new £38,700 or £41,700). The salary transition date and the absence rule transition date are three days apart, which means some applicants have one transitional protection but not the other.

Can the Home Office reject my application for absences under the old rules if I'm applying in 2026?

Yes. The pre-April 2024 portion of your qualifying period is still assessed under the old rules. If you exceeded 184 days in a single trip or 548 days total before April 11, 2024, your continuous residence is broken regardless of when you apply.

What if I was stuck abroad during COVID — does that still count?

COVID-related absences in 2020-2021 may be subject to discretionary exceptions, but these are not automatic. If you exceeded the absence limits due to travel restrictions, you should document the specific circumstances (flight cancellations, border closures, government guidance) and submit this with your application. The Home Office has discretion but does not waive the rules by default.

How many windows does the Home Office actually check?

For the post-April 2024 portion, the rolling methodology means the caseworker can theoretically check every single day as a potential window end-date. In practice, automated Border Force data makes this trivial — the system flags any 12-month window with more than 180 days of recorded absence. You should audit every window yourself before the system does.

Should I hire a solicitor for a transition-period application?

If the hybrid calculation is the only complexity in your application — no criminal issues, no immigration breaches, no salary concerns — a structured guide with the hybrid methodology is sufficient. If the transition-period complexity stacks on top of other issues (e.g., you also have HMRC discrepancies or a salary dip), a solicitor adds a layer of protection. The UK ILR Guide provides the hybrid calculation framework so you can assess your own situation before deciding whether additional help is needed.

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